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通过稳定PPARγ,USP2促进了与代谢功能障碍相关的脂肪性肝病的进展

Hao Luo^1,2, Chujiao Zhu³, Yingying Wang³

¹Institute for Translational Medicine on Cell Fate and Disease, Shanghai Ninth People's Hospital, Key Laboratory of Cell Differentiation and Apoptosis of National Ministry of Education, Department of Pathophysiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China. luohao@sdsmu.edu.cn.

Cell death and differentiation

|September 24, 2025

概括

乌比基特异性蛋白酶2 (USP2) 通过稳定PPARγ,驱动与代谢功能障碍相关的脂肪性肝病 (MASLD). 抑制USP2显示出治疗这种常见肝病的治疗潜力.

科学领域:

肝病学肝病学是一种肝病学.
分子生物学分子生物学
代谢性疾病研究研究

背景情况:

与代谢功能障碍相关的脂肪性肝病 (MASLD) 是一个普遍的全球健康问题.
精确的分子驱动器的MASLD病原体仍然不完全阐明.
了解新的调节途径对于开发有效的治疗方法至关重要.

研究的目的:

确定参与肝脂代谢和MASLD进展的关键分子调节剂.
在MASLD的背景下调查乌比基特异蛋白酶2 (USP2) 的作用.
探索USP2作为MASLD的潜在治疗点.

主要方法:

在MASLD患者肝脏组织和高脂肪饮食 (HFD) 鼠标模型中分析USP2表达.
在体内和体外研究涉及Usp2淘汰和药理抑制.
在小鼠模型中评估针对肝细胞的GalNAc结合siRNA疗效.
阐明USP2和PPARγ之间的相互作用的机制研究.

主要成果:

在MASLD肝组织和HFD诱导的小鼠模型中,USP2表达显著升高.
Usp2淘汰赛或抑制可以缓解肝肥胖症并改善代谢参数.
针对 Usp2 的肝细胞向性siRNA有效地减弱了小鼠中的 MASLD.
USP2通过二化稳定PPARγ,增强其转录活性并促进脂质积累.

结论:

通过稳定PPARγ,USP2在MASLD病变发生过程中起到关键的调节作用.
USP2-PPARγ轴促进肝脏脂质的积累,有助于MASLD的进展.
USP2代表了对MASLD和相关的代谢性肝病的有希望和可用药物的治疗标.

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